@inproceedings{NACLP-1989-ChenKW,
	author        = "Weidong Chen and Michael Kifer and David Scott Warren",
	booktitle     = "{Proceedings of the North American Conference on Logic Programming, 2 Volumes}",
	isbn          = "0-262-62064-2",
	pages         = "1090--1114",
	publisher     = "{MIT Press}",
	title         = "{HiLog: A First-Order Semantics for Higher-Order Logic Programming Constructs}",
	year          = 1989,
}